RA/DEC (2000)
21:38:16.800 -27:33:27.86
324.57 -27.557739
Type
SN Ia
Redshift
0.029991
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2018-05-24 06:14:24.000
TNS AT
Y
Public
Y
Host Name
2MASX J21381685-2733285
Host Redshift
0.029991
Discovery Mag
17
Filter
g-Sloan
Reporter/s
J. V. Shields, K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2018byw - 2018-05-26 19:01:55 FTS / FLOYDS-S (Global SN Project)z=
▌Show H at z=vexp= km/s
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▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
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▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ASASSN-5_Payne-Gaposchkin_g
 ▌ASASSN-3_Paczynski_g
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
2074 2018-05-26 19:01:55 FTS / FLOYDS-S 2700 Las Cumbres Observatory Daichi Hiramatsu Global SN Project tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-5_Payne-Gaposchkin 2018-05-19 01:26:24 - 2018-05-19 01:26:24 2458257.56 - 2458257.56 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
29016 2018-05-19 01:26:24 2458257.56 18.2 ABMag g-Sloan ASASSN-5_Payne-Gaposchkin [Last non detection]
g-Sloan ASASSN-3_Paczynski 2018-05-24 06:14:24 - 2018-05-24 06:14:24 2458262.76 - 2458262.76 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
29017 2018-05-24 06:14:24 2458262.76 17 ABMag g-Sloan ASASSN-3_Paczynski
G-Gaia Gaia_Gaia-photometric 2018-05-01 09:36:00 - 2018-05-30 19:37:55 2458239.9 - 2458269.3179977 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
29678 2018-05-30 19:37:55 2458269.3179977 16.51 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
29677 2018-05-01 09:36:00 2458239.9 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2018-05-25 14:32:38 - 2018-05-25 14:32:38 2458264.1059954 - 2458264.1059954 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
29336 2018-05-25 14:32:38 2458264.1059954 18.05 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2018-05-31 13:19:12 - 2018-05-31 13:19:12 2458270.055 - 2458270.055 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
29337 2018-05-31 13:19:12 2458270.055 16.82 0.074 17.97 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
19193 2018-06-08 10:00:34 Gaia_Bot1 A. Delgado, D. Harrison, S. Hodgkin et al. GaiaAlerts GaiaAlerts 21:38:16.800 -27:33:27.86 2018-05-30 19:37:55.000 16.51 G-Gaia PSN Gaia18bld GaiaAlerts confirmed SN Ia near centre of galaxy 2MASX J21381685-2733285, aka SN 2018byw N
19019 2018-06-01 09:29:45 ATLAS_Bot1 J. Tonry, B. Stalder, L. Denneau et al. ATLAS ATLAS 21:38:16.859 -27:33:28.70 2018-05-31 13:19:12.000 16.82 orange-ATLAS PSN ATLAS18qab ATLAS N
18852 2018-05-25 17:58:01 Krzysztof Stanek J. V. Shields, K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 21:38:16.819 -27:33:28.69 2018-05-24 06:14:24.000 17 g-Sloan PSN 2MASX J21381685-2733285 ASASSN-18le ASAS-SN Nuclear transient, so could also be a TDE 2018TNSTR.706....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
2069 2018-05-27 06:37:11 Daichi Hiramatsu Daichi Hiramatsu, Iair Arcavi, Jamison Burke, Griffin Hosseinzadeh, D. Andrew Howell, Curtis McCully, Stefano Valenti Global SN Project SN Ia 0.029991 1 Global SN Project Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find several good fits to normal Type Ia SNe around maximum light at the redshift of the proposed host galaxy (z=0.030; Jones et al. 2009, "The 6dF Galaxy Survey Data Release 3," via NED). 2018TNSCR.715....1H
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
2074 2018-05-26 19:01:55 FTS / FLOYDS-S 2700 Las Cumbres Observatory Daichi Hiramatsu Global SN Project tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.fits Object

Comments

TNS
System

Sun, 06/23/2019 - 10:43

Object coordinates updated

Object coordinates updated according to AT-report 19193 of Group GaiaAlerts
Previous RA, DEC: 21:38:16.819, -27:33:28.69 (324.57008, -27.55797)
Updated RA, DEC: 21:38:16.800, -27:33:27.86 (324.57, -27.557739)